ARS PESTICIDE PROPERTIES last update May 1995


name:MCPB                                      CASRN: 94-81-5

molecular formula: C11H13CLO3
molecular weight : 228.67
physical state   : S
(L=liquid; G=gas; S=solid)
reference: 9ACHB2

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Key to sources: (M)Manufacturer, (R)eview, (H)andbook, (E)xperiment,
                (C)alculated, (U)nknown, (P)EPA data, (W)auchope

* denotes a selected value where multiple values of a property are listed.
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-value-            -medium-   -temp-  -pH-   -source-    -reference-


Boiling point(deg C):
       -

Melting point(deg C):
100    -                                         H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE                           25     5-9      M     9RHPOU

Photolysis (per day):

Vapor pressure (mPa):
0.058                          20                H     9ACHB2



Water solubility (ppm):      -temp-          -source-  -reference-
44*                            RT                C     EESADV
                                                 H     9ACHB2 1983 ED.
                                                 H     9FACHB 1990

Organic solubility (ppm):
> 2E05 MG/ACETONE             25                 H     9PMED8
1.6E05 MG/DICHLOROMETHANE     25                 H     9PMED8
1.5E05 MG/ETHANOL             25                 H     9PMED8
6.5E04 MG/HEXANE              25                 H     9PMED8
8E03 MG/L TOLUENE             25                 H     9PMED8

Henrys law (Pa m3/mol):
3.0E-4                        20                 H     9PME10

Octanol/water partitioning (log Kow):
2.79                                             H     9PME10

Acid dissociation (pKa):
4.84                                             H     9PME10





Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
                                540*                  EESADV

Field Dissipation halflife(days):
value             test area        pH         source  reference
14                                               H    9ACHB2 1983 ED.
6                                                C    8CREAM

Halflife in soil:
Soiltype               aerobic      anaerobic   source    reference

Comments: